The title caught me, because I remember early discussions of this. Sure
enough Dave Forman's name pops up early. He was a great friend of Edward
Abbey, iconoclastic Author of the Monkey Wrench Gang, The two of them
were among the Founders of Earth First and participated in a bit of
Eco-terrorism in their spare time.

Little is known of their many
exploits because of an almost total Media Black-out, plus the
Criminalizing of such behavior in defense of Ma Nature. Read Abbey's
books defending The Great American West, whether the fiction, or
non-fiction. His was an amazing imagination, plus foresight.

And
read this Article. The idea is much less Radical than the thought of
rocketing wealthy Plutocrats off to destroy other Planets. Especially
when you realize that such a project will condemn the Earth's various
Species to guaranteed destruction...